Features
| • | FAILSAFE receiver, RO = HIGH for:
| | • | OPEN inputs |
| • | Terminated inputs |
| • | SHORTED inputs |
| • | Compatible with popular interface standards:
| | • | TIA/EIA-485 (RS-485) |
| • | TIA/EIA-422-A (RS-422-A) |
| • | CCITT Recommendation V.11 |
| • | Bi-Directional Transceiver
| | • | Designed for multipoint transmission |
| • | Separate driver input, driver enable, receiver enable, and receiver output for maximum flexibility |
| • | Wide bus common mode range
| | • | (-7V to +12V) |
| • | Pin compatible with: DS75176B, DS96176, DS3695 and SN75176A and B |
| • | Available in SOIC package |
Description The DS36276 FAILSAFE Multipoint Transceiver is designed for use on bi-directional differential busses. It is compatible with existing TIA/EIA-485 transceivers, however, it offers an additional feature not supported by standard transceivers.
The FAILSAFE feature guarantees the receiver output to a known state when the Interface is in the following conditions: Floating Line, Idle Line (no active drivers), and Line Fault conditions (open or short). The receiver output is in a HIGH state for the following conditions: OPEN Inputs, Terminated Inputs (50 Ohm), and SHORTED Inputs.
FAILSAFE is a highly desirable feature when the transceivers are used with Asynchronous Controllers such as UARTs.
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